Etymology Journal · M

Mind your own business

Meaning

A direct, often sharp instruction to stop asking questions or interfering. It is the ultimate boundary-setting phrase.

Firm, defensive

I don't appreciate the questions about my taxes, so please mind your own business.
She told the gossiping neighbor to mind her own business.
Look, just do your work and mind your own business.

This dates back to the 17th century, reflecting the importance of private life. It is the standard way to reject an unwelcome inquiry.

Nationwide

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